Harold Corporation, a manufacturer of electronics and communications systems, uses a service department charge system to charge profit centers with Computing and Communications Services (CCS) service department costs. The following table identifies an abbreviated list of service categories and activity bases used by the CCS department. The table also includes some assumed cost and activity base quantity information for each service for April. CCS Service Category Activity Base Assumed Cost Assumed Activity Base Quantity Help desk Number of calls $119,970 3,100 Network center Number of devices monitored 697,125 9,750 Electronic mail Number of user accounts 68,500 6,850 Local voice support Number of phone extensions 147,200 9,200 One of the profit centers for Harold Corporation is the Communication Systems (COMM) sector. Assume the following information for the COMM sector:

•The sector has 2,000 employees, of whom 40% are office employees.

•All the office employees have a phone, and 80% of them have a computer on the network.

•95 percent of the employees with a computer also have an e-mail account.

•The average number of help desk calls for April was 1 call per individual with a computer.

•There are 210 additional printers, servers, and peripherals on the network beyond the personal computers. a. Determine the service charge rate for the four CCS service categories for April. Carry your answer out to two decimal places. For example, $28.352 would be entered as 28.35. CCS Service Category Service Charge Rate Help desk: $ Per callSelectPer callPer device monitoredPer e-mail accountPer employeePer phone extension Network center: $ Per device monitoredSelectPer callPer device monitoredPer e-mail accountPer employeePer phone extension Electronic mail: $ Per e-mail accountSelectPer callPer device monitoredPer e-mail accountPer employeePer phone extension Local voice support: $ Per phone extensionSelectPer callPer device monitoredPer e-mail accountPer employeePer phone extension b. Determine the charges to the COMM sector for the four CCS service categories for April.